Heucherella plant named ‘Solar Power’

ABSTRACT

A new and distinct  Heucherella  plant substantially as shown and described, characterized by large, yellow to lime palmately lobed leaves, a red splatter pattern in the middle of the leaf lobes, a mounding plant habit, and excellent vigor.  Heucherella  ‘Solar Power’ grows equally well in full sun or filtered shade in the Pacific Northwest.

Botanical denomination: Heucherella hybrid.

Variety designation: ‘Solar Power’.

The present invention relates to a new and distinct cultivar ofHeucherella and given the cultivar name of ‘Solar Power’. Heucherella isin the family Saxifragaceae. Heucherella ‘Solar Power’ originated from acontrolled cross between Heuchera 909-2 (a proprietary unreleasedHeuchera villosa hybrid), as the seed parent, and massed selectedproprietary Tiarella, as the pollen parent.

Compared to the seed parent Heuchera 909-2, the new variety has yellowto lime green colored leaves rather than red brown.

Compared to Heucherella ‘Alabama Sunrise’ (U.S. Plant Pat. No. 19,611),the new variety has leaves that are less lobed and are marked with asplatter pattern rather than a strong red pattern along the veins.

This new Heucherella is distinguished by:

-   -   1. large, yellow to lime palmately lobed leaves,    -   2. a red splatter pattern in the middle of the leaf lobes    -   3. a mounding plant habit,    -   4. grows equally well in full sun or filtered shade in the        Pacific Northwest,    -   5. and excellent vigor.

This new cultivar has been reproduced only by asexual propagation(division and tissue culture). Each of the progeny exhibits identicalcharacteristics to the original plant. Asexual propagation by divisionand tissue culture using standard micropropagation techniques withterminal and lateral shoots, as done in Canby, Oreg., shows that theforegoing characteristics and distinctions come true to form and areestablished and transmitted through succeeding propagations. The presentinvention has not been evaluated under all possible environmentalconditions. The phenotype may vary with variations in environmentwithout a change in the genotype of the plant.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 shows a one-year-old Heucherella ‘Solar Power’ in bloom, growingin the ground in full sun in the trial field in July in Canby, Oreg.

FIG. 2 shows the foliage color of a one and a half year old Heucherella‘Solar Power’ grown in the shade in late summer in Canby, Oreg.

DETAILED PLANT DESCRIPTION

The following is a detailed description of the new Heucherella cultivarbased on observations of a two-year-old specimens growing in the groundin the garden in Canby, Oreg. Canby is Zone 8 on the USDA Hardiness map.Temperatures range from a high of 95 degrees F. in August to an averageof 32 degrees F. in January. Normal rainfall in Canby is 42.8 inches peryear. The color descriptions are all based on The Royal HorticulturalSociety Colour Chart, 5^(th) edition.

-   Plant:    -   -   Form.—Basal rosette, herbaceous perennial.        -   Hardiness.—USDA Zone 4 to 9.        -   Size.—25 cm tall from top of the foliage to the ground and            50 cm wide.        -   Habit.—Mounding.        -   Vigor.—Excellent.        -   Roots.—Fibrous, freely branching, fine, and white in color.-   Leaf:    -   -   Type.—Simple.        -   Arrangement.—Rosette.        -   Shape.—Ovate.        -   Lobing/division.—5 to 7 palmate lobes with the terminal the            longest, each with shallow secondary lobes.        -   Venation.—Palmate.        -   Margins.—Crenate.        -   Apex.—Mucronulate.        -   Base.—Cordate, sometimes overlapping.        -   Blade size.—Grows to 10 cm long and 9 cm wide.        -   Surface texture.—Glandular both surfaces.        -   Petiole description.—Grows to 30 cm long and 3 mm wide,            glandular hairs, Yellow Green 154C.        -   Leaf color.—Spring topside Yellow 11A in high light and            Yellow Green 154B in low light with splatter pattern Greyed            Orange 176B, bottom side Yellow 11B and Yellow Green 154C            with splatter pattern Greyed Purple 187B; summer topside            Yellow Green 144B to 144C with the splatter pattern Greyed            Purple 187B.-   Inflorescence:    -   -   Size.—2.5 cm wide and 9 cm long.        -   Type.—Raceme.        -   Number of flowers per raceme.—About 50.        -   Number of racemes.—10.        -   Peduncle.—Grows to 49 cm tall, 3 mm wide at base, Yellow            Green 154C, glandular hairs, no cauline leaves.        -   Pedicel.—Grows to 12 mm long, with glandular hairs, Greyed            Red 182B.        -   Bloom period.—April to July in Canby, Oreg.-   Flower bud:    -   -   Size.—1.5 mm wide and 3 mm long.        -   Description.—Glandular puberulent, ovoid.        -   Color.—Yellow 11C.-   Flower:    -   -   Type.—Perfect.        -   Shape.—Campanulate.        -   Size.—4 mm deep and 7 mm wide.        -   Petal description.—5 in number, oblanceolate, 3 mm long and            1 mm wide, tip acuminate, base attenuate, margin entire,            glabrous on both sides, White NN155D on both sides.        -   Calyx description.—3 mm deep and 5 mm wide, with 5 lobes,            divided ½ way to the base, campanulate, glandular hairs on            outside, glabrous inside, tip obtuse, margin entire, White            155C on both sides.        -   Stamen description.—5 in numbers, filaments 3 mm long, White            NN155D, anthers sterile, less than 1 mm, Greyed Orange 164A.        -   Pistil description.—One central two beaked pistil, 4 mm            long, White 155B.        -   Fragrance.—None.        -   Lastingness.—Each raceme blooms for about 2 weeks on the            plant.-   Fruit and seed: None-   Disease and pest tolerance: No known resistances. Excellent disease    tolerance to powdery mildew. All Heucherella are susceptible to root    weevils.

1. A new and distinct Heucherella plant as herein illustrated anddescribed.